/ ˈʌprɔː(r); NAmE / noun [ U , sing. ]
1.
a situation in which people shout and make a lot of noise because they are angry or upset about sth :
The room was in (an) uproar .
Her comments provoked (an) uproar from the audience.
2.
a situation in which there is a lot of public criticism and angry argument about sth that sb has said or done
SYN outcry :
The article caused (an) uproar.
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WORD ORIGIN
early 16th cent.: from Middle Dutch uproer , from op up + roer confusion, associated with roar .